diff --git a/app/src/main/java/com/chwl/app/ui/behavior/FixAppBarBehavior.java b/app/src/main/java/com/chwl/app/ui/behavior/FixAppBarBehavior.java
deleted file mode 100644
index 79f075b69..000000000
--- a/app/src/main/java/com/chwl/app/ui/behavior/FixAppBarBehavior.java
+++ /dev/null
@@ -1,49 +0,0 @@
-package com.chwl.app.ui.behavior;
-
-import android.content.Context;
-import android.util.AttributeSet;
-import android.view.View;
-
-import androidx.coordinatorlayout.widget.CoordinatorLayout;
-import androidx.core.view.ViewCompat;
-
-import com.google.android.material.appbar.AppBarLayout;
-
-/**
- * 此文件不能删，引用到AppLayout下面的
- * create by lvzebiao @2020/1/7
- */
-public class FixAppBarBehavior extends AppBarLayout.Behavior {
-
-    public FixAppBarBehavior() {
-    }
-
-    public FixAppBarBehavior(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    @Override
-    public void onNestedScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target, int dxConsumed, int dyConsumed, int
-            dxUnconsumed, int dyUnconsumed, int type) {
-        super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, type);
-        stopNestedScrollIfNeeded(dyUnconsumed, child, target, type);
-    }
-
-    @Override
-    public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target, int dx, int dy, int[] consumed, int type) {
-        super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, type);
-        stopNestedScrollIfNeeded(dy, child, target, type);
-    }
-
-
-    private void stopNestedScrollIfNeeded(int dy, AppBarLayout child, View target, int type) {
-        if (type == ViewCompat.TYPE_NON_TOUCH) {
-            final int currOffset = getTopAndBottomOffset();
-            if ((dy < 0 && currOffset == 0)
-                    || (dy > 0 && currOffset == -child.getTotalScrollRange())) {
-                ViewCompat.stopNestedScroll(target, ViewCompat.TYPE_NON_TOUCH);
-            }
-        }
-    }
-
-}
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 61f22d146..af21a4b45 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -893,7 +893,6 @@
     <string name="privacy_setting">隱私設置</string>
     <string name="notice_setting">通知提醒設置</string>
 
-    <string name="behavior_fix_app_bar">com.chwl.app.ui.behavior.FixAppBarBehavior</string>
 
     <string name="label_search_history">搜索記錄</string>
     <string name="label_room_history">進房記錄</string>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index e4ef0ce53..b3d0e6531 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -893,7 +893,6 @@
     <string name="privacy_setting">隱私設置</string>
     <string name="notice_setting">通知提醒設置</string>
 
-    <string name="behavior_fix_app_bar">com.chwl.app.ui.behavior.FixAppBarBehavior</string>
 
     <string name="label_search_history">搜索記錄</string>
     <string name="label_room_history">進房記錄</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 103f2ba95..e75e76b15 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -883,7 +883,6 @@
     <string name="privacy_setting">Privacy Setting</string>
     <string name="notice_setting">Notification Setting</string>
 
-    <string name="behavior_fix_app_bar">com.chwl.app.ui.behavior.FixAppBarBehavior</string>
 
     <string name="label_search_history">Search history</string>
     <string name="label_room_history">Room entry history</string>